The CATERPILLAR Cone-Roller Bearing (1B-3990) - 1B3990 is a high-quality OEM spare part produced by CATERPILLAR. It is also available as an alternative aftermarket part with the same code, 1B3990.

This bearing is compatible with various models, including excavators like 215, 215B, 219, 219D, 225, 225B, and 225D. It is also suitable for use in forest machines such as the 227 and FB221.

With a weight of 4.1 lbs, this cone-roller bearing has dimensions of 11.8 cm in length, 5 cm in width, and 12 cm in depth.